Lock



FIG. 1 is a perspective view of a lock according to a first preferred embodiment of my new design;

FIG. 2 is a front elevational view of the lock of FIG. 1, the rear elevational view being the same;

FIG. 3 is a left side elevational view of the lock of FIG. 1, the right side elevational view being the same;

FIG. 4 is a top plan view of the lock of FIG. 1;

FIG. 5 is a bottom plan view of the lock of FIG. 1;

FIG. 6 is a perspective view of a lock according to a second preferred embodiment of my new design;

FIG. 7 is front elevational view of the lock of FIG. 6, the rear elevational view being the same;

FIG. 8 is a left side elevational view of the lock of FIG. 6, the right side elevational view being the same;

FIG. 9 is a top plan view of the lock of FIG. 6; and,

FIG. 10 is a bottom plan view of the lock of FIG. 6.

The dashed lines in FIGS. 5 and 10 represent environment and are for illustrative purposes only and do not constitute part of the claimed design. 

I claim the ornamental design for a lock, as shown and described. 